查询词典 converter

The dual-band differential LNA use Inductive source degeneration structure, a matching network is used for the LNA to develop dual-band. The micro-mixer use a matching network shunt and parallel LC elements to develop wide-band matching. The biasing method reduces the"voltage headroom" difficulties inherent to the Gilbert cell, and the mixer linearity can be improved using this biasing method "Charge -Injection"by accurate adjustment of the input MOSFET operating point. The complementary VCO based on 2.5GHz, and tuning output buffer to approach 2GHz/5GHz dual-band for dual-band down-converter with MMIC technology.

其中双频差动低杂讯放大器，本电路用Inductive Source Degeneration 架构，在匹配网上设计，使低杂讯放大器工作在个频带上达成双频带的效果；CMOS 微混频器上采用LC串联、并联电路做匹配，达到宽频匹配的效果，并加入了"Charge-Injection"的方法来改善"voltage headroom"的问题，并同时提高线性度的表现；互补式压控振荡器以2.5GHz为基频的振荡器为出发点，透过电路的调整，以期达成2.5/5GHz的双频带需求，能够完整达成双频带接收机系统。

Based on the relation between modal amplitude and phase in the mode conversion of the few mode fiber, a novel configuration of an asymmetric biconical fiber and a fiber mode converter is presented to realize the nonreciprocal propagation in optical fibers. Preliminary feasibility is demonstrated both theoretically and experimentally.

基于少模光纤中模式转换的振幅和相位关系，提出采用不对称双锥光纤与光纤模式转换器的组合结构实现光纤中非互易传输的技术构思，从理论和实验上进行了初步的可行性论证。

In chapter one, the application and background of bidirectional DC/DC converter is introduced.

第一章介绍了双向DC/DC变换器的研究背景和应用。

Some kinds of bidirectional DC/DC converter are introduced.

回顾了各种双向DC/DC变换器的发展并对其进行了总结。

In chapter four, the DSP control PPS bidirectional DC/DC converter prototype parameter is designed.

第四章设计了基于DSP控制的大功率双向DC/DC变换器的电路参数。

XC68HC11F1FN Pinout:(1) Power saving driver (2) Built in DA converter accepting 6-bit digital input (for 262,144 colors)(3) Choice of 360 and 324 drive outputs (4) Input data bus at pixel level (5) Choice of output data format: gray scale or binary (6) Eleven reference voltage inputs for producing 10 segment gamma adjustment graph.

XC68HC11F1FN引脚说明：（1）省电驱动程序（2）内置DA转换器接受6位数字输入（为262，144色）（3）选择360和324驱动器输出（4）输入的像素数据总线一级（5）输出数据格式选择：灰阶或二进制（6）11参考生产10段伽玛调整图形电压输入。

Blister copper productivity is increased by 6.0 percent, cold burden input is increased by 7.8 percent and average converter life-span is improved from 213 to 235 by 10.3 percent.To improve the Intelligent Decision Support System, an information integration system is developed including management, monitoring and decision-making. It is applied in a factory. The computerized decision-making, status monitoring and management are realized. Therefore, better economic benefit is achieved.

为提高智能决策支持系统的信息集成度与决策精确度，研制并建成了集管理、监测和决策于一体的铜锍吹炼炉信息集成系统并投入使用，从而实现了生产过程决策、生产状况监测和各类管理的计算机化并获得了显著的经济和社会效益。

The converter combines the advantages of the PWM technique and soft-switching technique, the PWM is effected all over the whole loads range, and soft-switching is effeted only in the switching transition period, the ZVS of leading-leg is achieved by using the energy stored in leakage inductor of the transformer and the output inductor, the ZCS of lagging-leg is achieved by using a blocking DC capacitor, the ZVS and ZCS are achieved for the whole load ranges (5A~250A).

控制电路采用相移控制方式，综合了PWM控制和软开关技术的优点，在大范围内实现PWM控制，而在功率器件换流期间实现软开关换流，其中超前桥臂利用变压器的漏感，实现了零电压开关，滞后桥臂利用隔直电容，实现了零电流开关，并且整个变换电路能在（5A~250A）的范围内实现软开关工作条件，满足弧焊电源负载变化大的特点。

To maintenance and replacement the power module, you shouldn't pull out the fiber optic media converter, and shouldn't take down the rack mount, only need to pull out the blooey power module to repair or updating, make the maintenance convenience and shortcut.

维修和更换电力模块，你不该拔出光纤媒体转换器，不要抄铁架山、只需拔出热泵功率模块修复或更新，使维修方便，捷径。

Based on the analysis of micro -bolometer resistance -temperature characteristics, a new readout circuit was proposed. It allowed micro -bolometer operate without a temperature stabilizer over a wide range of ambient temperature. And it need a Flash memory to store the correcting factors of different temperatures and a temperature sensor to detect the ambient temperature of the micro -bolometer. By utilizing the factors in the Flash memory, Digital Analog Converter controls the micro -bolometer bias current to compensate the fluctuation of ambient temperature.

通过对微测辐射热计的电阻温度特性的分析，设计了一种新型无需温度稳定装置的读出电路，该电路的Flash存储器存储不同温度下的校正系数，温度传感器实时检测探测器的环境温度，从Flash中取出相应的温度校正系数送入数模转换器，通过DAC的电压输出来控制探测器偏流以进行环境温度补偿。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48